M35

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DkN
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M35

Post by DkN » Sat Jan 30, 2016 9:41 pm

I finally got an image worth sharing. Needed practice on focusing and what better way than a few thousand stars of a big cluster. Don't like the pastel blue I got. Not sure how to tweak that. 50x360 of LRGB


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Jeff

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Re: M35

Post by cgome004 » Sun Jan 31, 2016 3:30 pm

Sweet photo Jeff, the pastel blue may be coming from an over stretched green component of you LRGB. It should be easy to fix when your combine the RGB portion to make sure all the peaks are stretched evenly. In your case, make sure when you are looking at the histogram that the green peak is not wider than the B and G channels. That will give you a "cooler" blue tone to your image.

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DkN
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Re: M35

Post by DkN » Sun Jan 31, 2016 7:10 pm

Before I combined the RGB channels I ran LinearFit on them using the Green as the baseline. This is supposed to normalize each channel. Maybe something went Amis there. I got it in PS and tweaked it. PS is really the best for this. PI is strong but much harder to adjust specific color issues, imho. Here is the latest version. Subtle but I am liking it a bit more.

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Jeff

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Rudeviewer
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Re: M35

Post by Rudeviewer » Sun Jan 31, 2016 7:49 pm

Nice crisp image! I definitely like the second one.
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DkN
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Re: M35

Post by DkN » Sun Jan 31, 2016 8:06 pm

I'm stIill not happy with the star shapes. They have almost a quadrangle look to them. I know I'm nit picky but fine tuning has got to be where that last 10% of image quality comes from. I am hoping it is a focusing/focuser issue. Either drawtube sag or maybe the LP filter which I put in front of the flattener.
Jeff

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Re: M35

Post by Doug » Mon Feb 01, 2016 10:14 pm

Looks Great Jeff!
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Re: M35

Post by gardenfish » Wed Feb 10, 2016 11:56 am

Looks awesome. I think the colors in the second one are awesome. You Inspired me to go out and shoot M35 last night. Couple of hiccups but I got 25 shots to process. I will post today in when I get home. i am not as good in the processing as you are but we're learning.
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DkN
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Re: M35

Post by DkN » Wed Feb 10, 2016 5:50 pm

Thanks. I needed some data before I upgraded my focuser. Star clusters seem to be good for that. Ordering a Moonlite with stepper this week. So I'll come back and shoot M35 again after the upgrade and I'll be able to compare the star shapes. Also since I didn't refocus this shot during the full run, I'll be able to compare the stars FWHM when using the AF and see if I get smaller tighter stars after the upgrade. I did do a third version of this almost fully post in PS seemed pretty close to v2.
Jeff

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Re: M35

Post by Rudeviewer » Wed Feb 10, 2016 6:00 pm

Sometimes it's rough to work on an image over and over and not be able to tell if something is different. Sometimes that is why I just post it up and see what it looks like.
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Re: M35

Post by MikeM » Thu Feb 11, 2016 6:37 am

I like the second version a lot. Nice colors all around. Focus looks good. Is this with your AT6?
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Re: M35

Post by PeterT » Thu Feb 11, 2016 7:48 am

Man, there are a lot of stars !! :)
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Andre
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Re: M35

Post by Andre » Tue Feb 16, 2016 3:22 am

Beautiful ,the second image is great,I love clusters as they are great binocular targets to view whilst imaging.
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DkN
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Re: M35

Post by DkN » Tue Feb 16, 2016 10:54 am

Thanks all appreciate the views and comments.

Mike I used the SV80.
Andre ya I agree, when I started imaging I just started hitting the standard targets but I think it would of been a better learning experience if I had started on clusters. A lot to be said to first learn background noise management, star size control and star color management. Also good targets for tuning your flattener back focus, guiding accuracy. PA not an issue at these short exposure lengths.
Jeff

SV80ST w/ Moonlite CFL
GSO6RC w/ Moonlite CSL
ATIK 460EX mono Starlight Xpress Lodestar SX OAG & FW
Astronomik LRGB +Ha 12nm OIII 12nm SII 12nm IDAS LPS P2
SGP, EQMOD, PI, PS
Boxes of DIY
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